Beta Radiation

Beta Radiation

the flow of electrons or positrons (beta particles) that are emitted during the beta decay of radioactive isotopes.

Effect on the organism. Beta radiation leads to the development of all the signs of radiation poisoning, even to the destruction of cells, tissues, or the entire organism. The effect of beta radiation is similar to the biological effect of ionizing radiations of other types. External irradiation of an organism by beta radiation affects only the surface tissues, since the penetrating power of beta particles does not exceed several millimeters. When 45Ca, 99Sr, and other beta-radioactive isotopes enter the organism, the nature of the radiation damage depends both on their distribution in the organs and tissues and on their half-life. The relative biological effectiveness of beta radiation is close to 1.

The association of this therapy with local surgical excision of the lesions may also be a promising alternative to surgery alone and may approximate the excellent control rates reported after simple surgical excision followed by 30Gy beta radiation from a [sup.

High doses of external gamma radiation can damage thyroid gland tissue and lead to hypothyroidism as well as benign or malignant nodules, but the effects of low doses, especially of beta radiation such as [sup.

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